Molding-machine.



No. 761,224. PATENTED MAY. 31, 1904.

F. W. HALL. MOLDING MAG'HINE.

APPLICATION FILED JULY 11. 1903.

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No. 761,224. PATBNTED MAY 31, 1904. P. W. HALL. MOLDING MACHINE.

APPLICATION FILED JULY 11. 1993.

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PATENTBD MAY 31, 1904. P. w. HALL. MOLDINGIMAGHINE. APPLICATION FILEDJULY 11. 1903.

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Patented May 31, 1904.-

PATENT OFFICE.

FREDERIGKW; HALL, or CAMDEN, NEW JERSEY, ASSIGNOR OF ONE- HALF TO J. W.'PAXSON COMPANY, OF PHILADELPHIA,

ENNSYL- VANIA, CORPORATION OF PENNSYLVANIA. a

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 761,224, dated May 31,1904. Application filed July 11, 1903. Serial No. 165,045. (E5 model.)

To all whom it may concern:

Be it known that I, FREDERICK W. HALE, a citizen of the United States,and a resident of-Oamden, in the State of New Jersey, have inventedcertain new and useful Improvements in Molding-Machines, of which thefollowing is a full, clear, and exact description, refer' is'movedupward under suitably-controlled power-operated devices against across-head for properly compressing or ramming the sand- The generalobjects of the invention are to provide such type of machine wherein theparts shall be simple in construction, readily operable for the purposeof ramming the sand about the patterns, and thereafter separating thepatterns from the mold-cavities and where- 'in the different operationsshall have such dependent relations to the position of the crossheadthat improper manipulation of the machine by careless or inattentiveoperatives is rendered practically impossible.

With these general objects in View the invention consists of a doubletelescoping base portion conjointly and independently-operable forsimultaneously or independently raising and lowering the combinedstripping and pattern plate supports and the stool-plate support, across-head movable into position above or to one side of said supports,and means for controlling the operation of the combined stripping andpattern platesupport and the stool-plate support, so that when thecrosshead is in position above these. parts all of them may besimultaneously raised to effect the proper ramming of the sand in theflask and about the patterns Without possible inde In addition to theseseparate and combined elements the invention further consists of theparts and combinations, as will be hereinafter more fully described andthen definitely pointporting-arms and pivotal connection with the base,showing the manner of operating said arms. Fig. A is a detail view,partly in section, of the base, the combined stripping-plate andpattern-plate support, thestool-pla'te support, showing also. thetelescoping parts for simultaneous and independent operation of saidsupports. Fig. 5 is a detached front elevation of one of the cross-headside or supporting arms withso'me of the details omitted to more clearlyshow the piping for operating the different parts. Fig. 6 is a side viewof the parts shown in Fig. 5 looking in the direction of the arrow, Fig.5, some of the details being broken away to avoid confusion; and Fig. 7is a detail sectional view of the auxiliary controlling-valves.

-Referring to Figs. 1 and 2, A is the supporting-base of the apparatus,and it may be of any usual or desired form. Rigidly mounted upon saidsupport is the casting A, Figs. 2 and 4:, preferably cylindrical, whichconstitutcs the interior telescoping guide for the exterior maincylinder A having the head A from each side'of which project thesupporting-brackets A. The upper surface A A of the supporting-bracketsA A* constitutes the stripping-plate support, and projecting from theinner sides of these brackets are the lugs A A, constituting thepattern-plate supports,the said stripping-plate supports andpattern-plate supports being thus formed,- preferably, in an integralstructure, although, as will be obvious, this integral formation is notessential so long as the supports A and A are connected to move inunison, and I may designate them for identification as the combinedstrippingplate and pattern-plate support said rods 0 0 plate andpattern-plate support. Projecting inward of the casting or guide A isthe flange a, to which is secured a fixed cylinder B, Fig. 4, by meansof a suitable flange b and bolts Z), although any usual or desiredfastening means may be employed to. retain the cylinder B fixed withinthe casting A. Telescoping Within the fixed cylinder B is an interior orstoolplate plunger B, preferably made as a hollow casting for lightnessand to lit the cylinder B, its entire length to act as a guide for theplunger in its up and down movements, the lower end of the plunger beingclosed by the head 7)". Secured to the upper portion of the plunger B isthe stool-plate support C, having the upwardly-extending posts 0 c, theupper surfaces 0 c of which are substantially in the plane of thestripping-plate support A as seen in Fig. 1. Projecting from each of thecorners of the stool-plate support C are the perforated lugs 0 0 which,passing through suitable vertical slots in the supporting brackets A A",embrace the guide-rods 0 which extend between the side lugs c c at theSides of brackets A A", whereby when rising or falling movement is giventhe stool-plate support with relation to the combined stripping;

serve to steady the stool-plate support and arms 0 c and guide the sameaccurately. By referring to Fig. 4 it will be noted that between theflange I) of the cylinder B and the under surface of the head A there isa space into which leads a fluid-supply pipe M for raising the maincylinder and its connected stri-pping'and pattern plate supports A and-A, and it will also be noted that as said main cylinder A is thusraised by air or other fluid it will carry with it the stool-platesupport C,

since the head A of the mainv cylinder will.

j the combined stripping-plate support and pattern-plate support shallmove vertically, and

in order to accomplish this result more eflieientlyI have provided theexterior main cylinder A with side lugs A having suitable verticalperforations which embrace fixed guiderqds .A asshown in Fig. 2,extending upward from the base of the telescoping guide A. Theseguide-rods A extend into suitable recesses in the lower part of thecombined strippingplate and pattern-plate support, whereby said supportis guided in its up-and-down movement, and in order that the downwardmovement of the main exterior cylinder A shall not transmit shocks andother undesirable vibrations and jars I have provided in the lower partof the lugs A recesses A, and seated in these recesses springs A havebeen provided, which serve to check in a gradual manner the downwardmovement'of the main exterior cylinder A and consequently give .ayieldingeheck to the downward movement the contained patterns, aswillbeunde rstood,

and that by such verticalmovement. ofthese parts simultaneously thenecessary ramming or compression of the sand in the flask and about thepattern will be secured. Upon the exhaust of the fluid through the pipeM these parts will conversely simultaneously move to the loweredposition, as shown in Figs. land 4, the stool-plate support at suchtimes resting by its weight upon the head A of the exterior maincylinder A, as willbe understood, and thereby partaking of its movement.The action thus described having rammed the sand in the flask, itbecomes necessary to withdraw the patterns from the sand, and this issecured by the admission of the motive fluid through the pipe N beneaththe interiorcylinder or plunger B, whereupon the stool-plate support C,with its upward-extending arms 0, will be moved upward, during whichtime the combined stripping-plate support and patternplate support willremain stationary. This movement of the stool-plate support C willengage by the upper surfaces of the arms 0 the stripping-plate and raiseit, together with the flask, away from the patterns, as will be obvious.

Pivoted to the upward-extending brackets D, secured tothesupportirig-base A, are the side arms D D of the cross-head D thepivotal connection of said arms to the portions D being shown in Figs.1, 2, and 3 as formed by suitable bolts D D suitable stops D D" beingprovided to limit the swinging movement of the side arm-s of thecross-head upon their pivots D The cross-head D may have secured theretoat its under surface a suitable block, as D, of a size to effect theproper ramming of sand in the flask, the said crosshead being carried byan adjusting-screw D, projecting upward from the side arms D and held inadjusted position by suitable clamping-nuts D In order to effect themovement of the cross-head, a simple cylinder (Z is provided, the samebeing pivoted at d to a bracket (Z said cylinder having connectedthereto a suitable pipe, as O, for the supply of motor fluid thereto inany suitable manner,

so as to effect the desired reciprocation of the piston in saidcylinder; The details of this: 'connection of the fluid-supply pipe 0 tothe cylinder d form no'part of mypresent invention, and'as they are wellwithin the scope of the ordinary mechanicfurther detailed descriptionthereof will be unnecessary. The

piston of of said cylinder (shown by dotted lines in Fig. 3) isconnectedby a rod d" to a link 0?, which is itself pivoted at d6 to the side armsof the cross-head, as shown in Figs. 1 and 3., The pivotal connection ofthe cylinder cl to the bracket 01 serves to turn said cylinder slightly,due to the rising-and-falling movement of its pivotal connection d withthe side arms of the cross-head, as will be understood. Referring toFig. 3 more particularly, it will be noted that the side arms of thecross-head project some distance below the pivots D and said lowervprojecting portion of the side arms is provided with a slot, as 01 inwhich fits a pin d of a link d said link having connected thereto therods 0Z preferably formed as shown in Fig. 8. Suitably secured to thebase of the device is a bracket (Z having pivoted at cl a cylinder d,carrying a spring d, disposed between the cross-head di connected to therods d and the head al ofthe cylinder, whereby as the side arms of'thecross-head swing upon their pivots d said spring is compressedwithin the cylinder, as

shown in Fig. 3,,and serves to cushion the downward swinging movement ofthe crosshead as the side arms thereof approach the stops D, said springalso serving to return the cross-head to its upright position when themotor fluid from the cylinder d exhausts' As thus far described it willbe noted that the entire operation of the moving parts of the device iseflected by fluid action, such as compressed air or the like,- and inorder that the operative may at times have the controllinginstrumentalities in convenient position for his ready manipulation Ihave disposed the piping and valves leading to the various cylinders asshown in Figs. 5, 6, and 7.

Connected to one of the side arms D of the cross-head isa hood or coverE, extending upward and terminating in a supporting-bracket E inposition to be within the reach of the operative.

M and N forms no part'of my present inven.

tion, and as they are well understood by those skilled in the art it isunnecessary to elucidate the matter in this connection, such cocks beingsimply for the admission and exhaust of the air or other fluid to andfrom the main cylinder A 'and the interior cylinder B for raising andlowering the stripping and pattern plate supports and the stool-platesupport, respectively. From the valves M and N, respectively, the pipesM and N return downward within the hood or cover E and connect with theinlets to the main and interior cylinders, as shown in Fig. 4. Alsocarried upward and returned within the hood or cover E is the pipe 0,which is in constant communication with a source of compressed air orother fluid-supply, as at 0 Fig. 5, said pipe 0 being provided with asuitable two-way cock 0 of any usual or desired construction,

whereby at all times the supply of air or other fluid to or from thecylinder d for swinging the cross-head D from above the strippingplateand pattern plate supports may be controlled. By this disposition of thepiping connection and the valves for controlling the fluid-supply theoperative has at all times in convenient position the means forcontrolling all the operating parts.

It is desirable that the exterior maincylinder shall be capable of beingraised only when a flask is to be rammed that is, when the cross-head Dis in position above the combined stripping-plate and pattern-platesupport'and that the interior cylinder or plunger connected to thestool-plate support shall be capable of being independently raisedforstripping the flask and mold from the patterns only when thecross-head is moved from its position. above thecombined stripping-plateand pattern-plate support, and to this end I have provided the valves Hand I, hereinbefore referred to.

Thepipe G, which connects directly with the supply-pipe G, extendsparallel to the .plane of movement of the side arms D of the cross-headand separated a short distance rue therefrom, as shown in Figs. 5, 6,and 7. Discomprise a plug t, havinga perforation t and an extended stem25", provided, with a beveled 25*, disposed between the closed end t ofthe tube 6, in' which the plug 25 slides, and the plug 25.

The tube It is also providedwith a perforation 25 which when the plug 6is pressed inward by the stress of its spring will register with theperforation t in the plug and allow the compressed air or other fluid topass into the pipes M and N, according to which of the valves is soacted upon, so that thereafter by manipulation of the cocks M or N theouter or inner cylinder A B, respectively,

may be raised and lowered. The heads of the valves H and I extend intothe path of movement of one of the side arms D of the cross-head, sothat when the guide-arm moves into engagement with either head it willmove the valve back against the stress of its spring and closecommunication between the main supply-pipe G and the pipe controlled bythe valve so acted upon. The valve I controls communication between thesu pply-pipe G and the pipe M for operating the exterior main cylinder Aand it is so disposed in pipe G that when the cross-head is in itsraised position and directly above the strippingplate and pattern-platesupport the side arm of the cross-head is not in contact with the headof the Valve, as shown in Figs. 6 and 7 so that communication isestablished between the supply-pipe Gr and pipe M, operating theexterior main cylinder. When, however, the cross-head is swung to oneside, the side arm D contacts with the head of valve I and pressing backthat valve shuts oif communication between the supply and pipe M, sothat the exterior main cylinder carrying the strippingplate andpattern-plate supports cannot be raised. So, also, with respect to valveH. Itis disposed with relation to the side arm D of the cross-head sothat when the cross-head is in position over the stripping-plate andpatternplate supports the side arm D is in contact with the head ofvalve H and pressing back that valve against its spring shuts offcommunication between the main supply G and pipe N for operating theinterior cylinder or plunger carrying the stool-plate support, so thatthe stool-plate support cannot be raised, except as it is raised by theexterior main cylinder, and when the cross-head swings to one side theside arm D releases the valve H to the action of its spring, which openscommunication with pipe N, so that at such time the interior cylinder orplunger may be raised independently of the exterior main cylinder, whichlatter at such time is rendered inoperative by its valve I.

From the construction described it will be seen I have provided a mainexterior cylinder for carrying the stripping-plate support and thepattern-plate support, and within this main cylinder I have compactlyarranged the interior or secondary cylinder for above thestripping-plate and pattern-plate supports, thus providing an automaticmeans for preventing improper manipulation of the device. Theupwardly-projecting arms carried by the stool-plate support having theirupper surfaces substantially in the plane of the stripping-platesupports enables the said arms to raise the stripping-plate and theparts resting thereon upward and away from the patterns when the latterare to be drawn from the flask.

. Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a molding-machine, the combination of a main exterior cylindercarrying the stripping-plate support and the pattern-plate support, asecondary cylinder or plunger disposed within the main exterior cylinderand carrying the stool-plate support, means for supplying fluid-pressureto the main exterior cylinder to thereby simultaneously raise thestripping-plate support, the pattern-plate support, and the stool-platesupport, and means for supplying fluid-pressure to the secondarycylinder to operate the stool-plate support independent of thestripping-plate and patternplate supports.

2. In a molding-machine, the combination of a main exterior cylindercarrying the stripping-plate support and pattern-plate support, asecondary cylinder or plunger disposed within the main exterior cylinderand carrying the stool plate support independent of the main exteriorcylinder, said stool-plate support having upwardly-projecting portionsthe upper surfaces of which are in the plane of the stripping-platesupport, means for supplying fluid-pressure to the main exteriorcylinder to thereby simultaneously raise the strippingplate support, thepattern-plate support, and the stool-plate support, and means forsupplying fluid-pressure to the secondary cylinder to operate thestool-plate support independent of the stripping-plate and pattern-platesupports.

3. In a molding-machine, the combination of a main exterior cylindercarrying the stripping-plate support and the pattern-plate support,asecondary cylinder or plunger disposed within the main exteriorcylinder and carrying the stool-plate support, the exterior cylinderhaving guide-rods, said stripping-plate support having lugs orprojections for engaging said guide-rods, means for supplyingfluidpressure to the main exterior cylinder to thereby simultaneouslyraise the stripping-plate support, the pattern-plate support, and thestool-plate support, and means for supplying fluid-pressure to thesecondary cylinder to operate the stool-plate support independent of thestripping-plate supports.

4. In a molding-machine, the combination of a main exterior cylinderhaving side projections, and carrying the stripping-plate supforsupplying fluid-pressure to the secondary cylinder to operate thestool-plate support independent of the stripping-plate and patternplatesupports. 7

5. In amolding-machine, the combination of a supporting-frame or base,guide-rods ex tending upward therefrom, a main exterior cylinder havingside projections for engagement with said guide-rods and carrying thestripping-plate and pattern-plate supports, a secondary cylinder orplunger arranged within the main exterior cylinder and carrying thestool-plate support and provided with side projecting portions,guide-rods carried by the main exterior cylinder'and engaged by the saidprojecting portions of the stool -plate support, and means for supplyingfluid-pressure to the main exterior cylinder to therebysimultaneouslyraise the stripping-plate support, the pattern-platesupport, and the stoolplate support, and means for supplyingfluidpressure to the secondary cylinder to operate the stool-platesupport independent of the stripping-plate and pattern-plate supports.

6. In a molding-machine, the combination. of a main exterior cylinderhaving upwardlyprojecting arms, stripping-plate supports andpattern-plate supports carried by said arms, a secondary cylinderdisposed within the main exterior cylinder and carrying the stool-platesupport, arms projecting upward therefrom and having their uppersurfaces in the plane of the stripping-plate support, and means forsupplying fluid-pressure to the main exterior cylinder to therebysimultaneously raise the stripping-plate support, the pattern-platesupport, and the stool-plate support, and means for supplyingfluid-pressure to the secondary cylinder to operate thestool-platesupport independent of the stripping-plate and patternplate supports.

7. In a molding-machine, a cross-head, a main exterior cylinder carryingthe strippingplate and pattern-plate supports, a secondary cylinderarranged within the main exterior cylinder, a stool-plate supportcarried thereby, arms projecting upwardly from the stool-plate support,the ends of said arms being disposed substantially in the plane of thestrippingplate support, means for supplying fluid-pressure to the maincylinder for simultaneously raising and lowering the stripping-platesupport, the pattern-plate support, and the stool' plate support toeffect the ramming operation,

and means for thereafter supplying fluid-pressure to the secondarycylinder to raise'the stool-plate support and its upwardly-projectingarms to raise the mold from the patterns.

8. In a molding-machine, the combination of a movable cross-head,astripping-plate support, a pattern-plate support, and astool-platesupport, means for simultaneously raising and lowering all of saidsupports to effect the ramming operation, a second means for raising andlowering the stool-plate support in separating the mold from thepattern, and devices controlled by the position of the crosshead forrendering the first-mentioned means inoperative when the cross-head isnot in position for the ramming operation, and the second meansinoperative when the cross-head is in said position.

tive when the cross-head is in positionto one side of said supports, andthe second means inoperative when the cross-head is in position abovesaid supports.

10. In a molding-machine, a main cylinder carrying the stripping-plateand pattern-plate supports, a secondary cylinder carrying thestool-plate supports, a cross-head pivotally mounted to swing toposition either above or to one side of said supports, means forsupplying fluid-pressure to the main cylinder for simultaneously raisingand lowering all of said supports, a second means for supplyingfluid-pressure to the secondary cylinder to independently raise andlower the stool-plate support, and devices controlled by the position ofthe cross-head for rendering the first of the above-mentioned meansinoperative when the cross-head is in position to one side of saidsupports, and for rendering the second means inoperative when thecross-head is in position above said supports.

11. In a molding-machine, the combination of a main cylinder carryingstripping-plate and pattern-plate supports, a secondary cylindercarrying a stool-plate support and having upwardly projecting arms theends of which are normally in substantially the plane of thestripping-plate support, a cross-head, pivotally-mounted side armscarrying said cross-head, separate conduits leading from a source offluid-supply to each of said cylinders, valves disposed in said conduitsand having portions projecting into the path of movement of one of theside arms of the cross-head to thereby close the valve in the conduitleading to the main cylinder when the cross-head is in position to oneside of said supports, and to close the valve in the conduit leading tothe secondary cylinder when the cross-head is in position above saidsupports.

12. In a molding-machine, the combination of a main cylinder carryingstripping-plate and pattern-plate supports, a secondary cylinderdisposed within the main cylinder carrying a stool-plate support andhaving upwardly-projecting arms the ends of which are normally insubstantially the plane of the stripping-plate support, a cross-head,pivotally-mounted side arms carrying said crosshead, separate conduitsleading from a source of fluid-supply to each of said cylinders, valvesdisposed in said conduits and having portions projecting into the pathof movement of one of the side arms of the cross-head to thereby closethe valve in the conduit leading to the main cylinder when thecross-head is in position to one side of the said supports, and to closethe valve in the conduit leading to the secondary cylinder when thecross-head is in position above said supports.

13. In a molding-machine, the combination of a main cylinder carryingstripping-plate and pattern-plate supports, a secondary cylindercarrying a stool-plate support, a crosshead, side arms pivotally mountedand carrying said cross-head, a bracket carried by said side arms,separate conduits leading from a source of fluid-supply to said main andsecondary cylinders, said conduits leading from a point in proximitywith the pivotal mounting of the side arms to and from the bracket, andvalves and cocks disposed in each of said conduits adjacent the bracket.

14. In a molding-machine, the combination of a main cylinder carryingstripping-plate and pattern-plate supports, a secondarycylindercarryingastool-platesupport,across-head, side armspivotallymounted and carrying said cross-head, abracket carried by saidside arms, separate conduits leading from a source of fluid-supply tosaid main and secondary cylinders, said conduits leading from a point inproximity with the pivotal mounting of the side arms to and from thebracket, and valves or cocks disposed in each of said conduits adjacentthe bracket, auxiliary valves also disposed with relation to each ofsaid conduits, and means forautomatically closing one and opening theother of said auxiliary valves as the side arms are moved on theirpivotal mounting. V p

15'. In a molding-machine, the combination of a supporting-frame, sidearms pivotally mounted thereon and carrying'a crosshead,

'a pivotally-mounted cylinder also carried by FREDERICK W. HALL.

Witnesses:

A. FLORENCE YEEGER, A. M. BIDDLE.

